{"product_id":"lb-90676-lennox-furnace-control-board","title":"LB-90676 | LENNOX Furnace Control Board","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp\u003eThe LB-90676 is a furnace control board designed for LENNOX HVAC systems. It functions as the central control unit managing essential furnace operations including ignition sequencing, blower control, safety monitoring, and system diagnostics.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable width=\"100%\" style=\"height: 225.6px; width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"width: 31.0258%; text-align: left; height: 19.6px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eCondition\u003c\/th\u003e\n\u003ctd style=\"width: 68.6099%; height: 19.6px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"width: 31.0258%; text-align: left; height: 19.6px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eBrand\u003c\/th\u003e\n\u003ctd style=\"width: 68.6099%; height: 19.6px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cspan\u003eLENNOX\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"width: 31.0258%; text-align: left; height: 19.6px;\"\u003eCategory\u003c\/th\u003e\n\u003ctd style=\"width: 68.6099%; height: 19.6px;\"\u003e\n\u003cdiv class=\"mt-1 md:mt-0 column-left basis-2\/4 divide-y divide-rad-gray-10 border-b-[0.0625rem] border-rad-gray-10 md:border-0\"\u003e\n\u003cdiv class=\"flex gap-[1.75rem] md:gap-x-0 xl:gap-x-[1.875rem]\"\u003e\n\u003cdiv class=\"text-body-4 w-full font-light py-5 pl-4 md:py-6 md:pl-6 text-rad-gray-70\"\u003e\n\u003cdiv class=\"max-w-[8rem] break-words\"\u003e\n\u003cspan\u003e\u003c\/span\u003eHVAC \u0026amp; Refrigeration\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"width: 31.0258%; text-align: left; height: 19.6px;\"\u003ePart Number\u003c\/th\u003e\n\u003ctd style=\"width: 68.6099%; height: 19.6px;\"\u003e\u003cspan data-sheets-root=\"1\"\u003eLB-90676\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"width: 31.0258%; text-align: left; height: 19.6px;\"\u003e\u003cspan\u003eSubcategory\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 68.6099%; height: 19.6px;\"\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cspan\u003eFurnace Control Boards\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"width: 31.0258%; text-align: left; height: 19.6px;\"\u003eItem Thickness\u003c\/th\u003e\n\u003ctd style=\"width: 68.6099%; height: 19.6px;\"\u003e1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"width: 31.0258%; text-align: left; height: 19.6px;\"\u003ePower Source\u003c\/th\u003e\n\u003ctd style=\"width: 68.6099%; height: 19.6px;\"\u003eGas, Corded Electric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"width: 31.0258%; text-align: left; height: 19.6px;\"\u003eAmperage\u003c\/th\u003e\n\u003ctd style=\"width: 68.6099%; height: 19.6px;\"\u003e50 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\" style=\"width: 31.0258%; text-align: left; height: 19.6px;\"\u003ePower Phase\u003c\/th\u003e\n\u003ctd class=\"text-left text-body1 py-10 desktop:w-[60%]\" style=\"width: 68.6099%; height: 19.6px;\"\u003e1 Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"width: 31.0258%; text-align: left; height: 19.6px;\"\u003eVoltage\u003c\/th\u003e\n\u003ctd style=\"width: 68.6099%; height: 19.6px;\"\u003e24 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"width: 31.0258%; text-align: left; height: 19.6px;\"\u003eMaterial\u003c\/th\u003e\n\u003ctd style=\"width: 68.6099%; height: 19.6px;\"\u003ePlastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 10px;\"\u003e\n\u003cth style=\"width: 31.0258%; text-align: left; height: 10px;\"\u003eWeight\u003c\/th\u003e\n\u003ctd style=\"width: 68.6099%; height: 10px;\"\u003e2 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003cspan style=\"font-size: 0.875rem;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About LB-90676\u003c\/h4\u003e\n\u003cp\u003eThe LB-90676 is a low-voltage, microprocessor-based furnace control board from Lennox, designed to provide complete system management for gas furnace and HVAC systems. It controls ignition sequencing, blower operation, safety monitoring, and diagnostic reporting for both residential and commercial heating units. Compatible with natural gas and dual-fuel systems, the LB-90676 is used across Lennox, Armstrong, Ducane, and related brands. The board includes integrated diagnostic LEDs, single-phase power support, and works with standard 24 VAC thermostats. Replacement models like 65K29, BCC3-2, and upgraded versions such as 48K98 offer drop-in compatibility.\u003c\/p\u003e\n\u003ch4\u003eKey Features:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMicroprocessor-Controlled Operation: Manages ignition, combustion blower, and circulating fan functions.\u003c\/li\u003e\n\u003cli\u003e24 VAC Input Power: Compatible with low-voltage control circuits and standard HVAC system wiring.\u003c\/li\u003e\n\u003cli\u003eBlower Timing Control: Automatically regulates heating and cooling blower speeds for optimized airflow.\u003c\/li\u003e\n\u003cli\u003eSafety and Limit Monitoring: Continuously checks safety switches, rollout sensors, and pressure switches to ensure safe operation.\u003c\/li\u003e\n\u003cli\u003eIntegrated Diagnostics: Built-in LEDs provide error code indications for fast troubleshooting.\u003c\/li\u003e\n\u003cli\u003eSingle-Phase Compatibility: Designed for use with 1-phase electrical systems.\u003c\/li\u003e\n\u003cli\u003ePower Source: Supports gas and corded electric systems for versatile use.\u003c\/li\u003e\n\u003cli\u003eIgnition Control: Provides timed ignition sequence, flame monitoring, and system lockout upon ignition failure.\u003c\/li\u003e\n\u003cli\u003eOEM Replacement: Direct replacement for LB-90676, 65K29, BCC3-2, and compatible models (Armstrong, Ducane, Lennox).\u003c\/li\u003e\n\u003cli\u003eMaterial Construction: Durable plastic enclosure for component protection.\u003c\/li\u003e\n\u003cli\u003eThermostat Resettable: System can often be reset after fault using the thermostat interface.\u003c\/li\u003e\n\u003cli\u003eCompact Design: Board dimensions optimized for easy installation and servicing.\u003c\/li\u003e\n\u003cli\u003eCompatible Gas Controls: Works with standard 24 VAC thermostatic systems without the need for proprietary controllers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe LB-90676 provides precise electronic control and dependable operation for Lennox-brand gas furnaces and related HVAC systems, ensuring safe ignition, efficient airflow management, and reliable diagnostics in demanding heating environments.\u003c\/p\u003e","brand":"LENNOX","offers":[{"title":"Default Title","offer_id":49105318215936,"sku":"LB-90676","price":554.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/s-l1600_d82e5259-ca7e-409d-b367-2773223e6ac0.webp?v=1785544875","url":"https:\/\/alotechparts.com\/products\/lb-90676-lennox-furnace-control-board","provider":"Alo Tech Solutions","version":"1.0","type":"link"}